CN102056708B

CN102056708B - Machine tool having a carrier device for work pieces or tools

Info

Publication number: CN102056708B
Application number: CN200980121211.8A
Authority: CN
Inventors: 乌多·图尔曼
Original assignee: Deckel Maho Seebach GmbH
Current assignee: Deckel Maho Seebach GmbH
Priority date: 2008-07-25
Filing date: 2009-07-09
Publication date: 2013-04-24
Anticipated expiration: 2029-07-09
Also published as: WO2010009816A1; DE102008034728A1; DE102008034728B4; EP2318177B1; JP5372150B2; US8181321B2; CN102056708A; JP2011528996A; ES2391711T3; US20110233879A1; EP2318177A1

Abstract

The invention relates to a machine tool having a carrier device for work pieces or tools or tool spindles, comprising a console that can be pivoted about a first axis from the horizontal into the vertical position and that is housed on two carriages guided in the machine stand. A carrier for a work piece or a tool spindle is arranged on the console, and a drive device is provided for the synchronous displacement of both carriages on guide rails fixed on the machine. According to the invention, the console is hinged via two crank-like arms to a stationary machine part in addition to being supported on both carriages.

Description

Has the lathe for the carrier arrangement of workpiece or instrument

Technical field

The present invention relates to a kind of lathe that has for the carrier arrangement of workpiece, instrument or tool spindle, it comprises and can pivot and be supported on carriage at least one side bracket, be arranged in the carrier that is used for workpiece or tool spindle on the described carriage and the drive unit that is used for linear support-moving around first axle.

Background technology

For the processing of the General multiple shaft of the complex part in grip device, known carrier device and work stage are arranged for a long time in various embodiments, can make therein the workpiece that is clipped on the work stage pivot 90 ° arriving the upright position from horizontal level, and vice versa.If work stage is arranged the turntable that contains rotary driving, might carry out 5 axial process operations by the pivot movement that these motors drive so, that is, can approach one by one continuously also end face and all sides of processing work by lathe.

EP 1 882 544A disclose a kind of 5 axial processing for workpiece and the drilling and milling machine of configuration, and it comprises the general carrier arrangement that comprises the work stage layout.Can make work stage from the pivoted to the upright position by motor, wherein obliquity also be possible.In this carrier arrangement, the guide rail on the pedestal is arranged at and is close to two side-walls in the frame, two rack arrangement on described guide rail in order to can synchronously be shifted by means of linear electric motor.Bridge shape carriage is supported in two supports pivotly, and the mid portion with respect to the pivot axis skew of described bridge shape carriage forms the support member of turning of work piece platform.With being installed in two direct drive electric notors in the support bridge shape carriage is pivoted.Described drilling and milling machine has the vertical milling head as machining cell, and described vertical milling head can guided on horizontal X reference axis and vertical Z reference axis on the frame with being shifted, and the movement of advancing on horizontal Y reference axis is to be carried out by the Workpiece carrier device.Owing in the support of two dimensionally stables on both sides to the support of bridge shape pivoting bracket, might reach sufficiently high rigidity, even have in the relatively large diameter situation still like this in work stage.Yet, for instance, bridge shape carriage and work stage are together pivoted and nipped instrument may have large weight because two direct-type electric drivers in support need to have sizable size, it is disadvantageous that the relatively high space requirement that the tablecloth is put and considerable technology are made great efforts.

Except above situation, EP 0 712 682A also disclose a kind of for 5 axially on processing work and the drilling and milling machine that is the derrick tower tectonic type that disposes, its support has two isolated parallel side walls.Pivotable Workpiece carrier device is arranged between these sidewalls, and its bridge shape pivoting bracket carries the workpiece turntable of rotary driving, and directly is supported in the sidewall of support via two horizontal linings of sidepiece.With the electric driver that is installed on the side wall outside carriage is pivoted around common axis of support.Bridge shape carriage has the mid portion with respect to common rotation and axis of support skew, and the workpiece turntable is supported on the described mid portion.The both sides of this mid portion firmly are connected to the interior end of the bearing insert that is arranged in the sidewall.Replace pivotable Workpiece carrier device, also can use fixing work stage in this known drilling and milling machine, described work stage side direction is attached to the pedestal on the inboard of the lower region that is formed at two sidewalls.

The 5 another kind of lathes that axially mill processing that are used for workpiece are described in WO 2006/072356A.Employed work stage has rotation/pivot unit in this lathe, and its rotary unit is placed in the pocket-like dimple that is arranged in the central area.Rotary unit firmly is connected to the place, front of pivot unit via the sides tapered support member.Rotary unit is placed on the general structure height that is intended that reduction work stage layout in the pocket-like dimple.

Summary of the invention

Target of the present invention provides a kind of carrier arrangement for workpiece and instrument or tool spindle, its need seldom the space, aspect actuation techniques, have the rigidity of simple structure and increase, and permit high regulating the speed.

This target is to reach by the fact that also is coupled in hinged way the fixation kit of body via arm or the hinge support of crank-like carriage is on being supported on supporting structure according to the present invention.

Technically, support according to the present invention device simple in structure because its do not need for work stage from its horizontal position adjustment to inclination or upright position or the rotating driving device that vice versa.Carriage with work stage from its horizontal level to tilt, vertical or tipping position and the adjustment that vice versa/pivot movement be to reach at the Linear-moving that is installed on the side rail of body (its preferably the pedestal on the inboard at the sidewall of support on) by supporting structure.The fixation kit that the both sides of carriage pivotably are supported on the supporting structure and bridge shape carriage (itself and rotary support member spaced apart) is attached to body via the actuation arm of crank-like (for example, be attached to the sidewall of support) cause sports coupling, carriage is taked to increase gradually until the obliquity of vertical orientation from horizontal initial position together with the top work stage that supports in its process, or also might arrive the tipping position.Because the pivot of carriage moves and only needs linear actuating device and do not need other rotating driving device, so the result is for significantly having simplified structure, reduced manufacturing cost and also having needed less space owing to having omitted bulky rotating driving device aspect actuation techniques.

According to suitable embodiment of the present invention, the arm of two crank-like is provided, its free arm is supported in the swivel bearing in the sidewall of support, and described swivel bearing forms the fixation kit of body.This support is so that might use assembly simple in structure and cause the high rigidity of support member.Suitably, these bearings of the free terminal of the arm of crank-like part are placed in the sidewall of support above the Workpiece carrier device, so that it is largely protected in order to avoid detrital deposit.

In order to increase its rigidity and bridge joint free space, the arm of crank-like have curved shape and in the carrying of one end (namely, towards interior) bearing insert, it is the part of bearing arrangement in carriage, and outside its another end carrying (namely, towards outside) bearing insert, it is the part of bearing arrangement in the respective side walls of support.

To adjust movement for what reach that platform is arranged into horizontal level and inclination or upright position, the arm of crank-like in carriage bearing and the bearing arrangement of carriage on support at a distance of preset distance, wherein the length of the arm of crank-like should be mated this distance between the bearing in the carriage.Suitably, bearing and carriage the bearing arrangement on support of the arm of crank-like in carriage is in common plane in carriage, thereby allows to realize the low clearance of carriage and therefore need accordingly little room.

According to another advantageous embodiment of the present invention, with linear electric motor with the linearity that the acts on supporting structure mobile drive unit of advancing, yet, wherein also can use for example conventional linear actuating device of pressure fluid cylinder, main shaft driving device (ball screw main shaft).If the use linear electric motor, its tabular main and less important part preferably is placed in the mode of relative tilt on the body so, therefore is formed for solid and possible even the self centering bearing of carriage.

Be supported on pivotly on the supporting structure of linear displacement and (for example) is coupled to the fixation kit of body via the hinge support of crank-like in addition the fact but essential technical elements of the present invention is carriage.This is so that also Linear-moving of the swivel bearing that might make by the Linear-moving of supporting structure carriage.Simultaneously, movement of bracket is coupled to body makes carriage together pivot with the platform of taking in that is installed on its end face, is therefore adjusted to the corresponding operating position of wanting with level, inclination or vertical mode for described.

Can provide two independent side bracket, but carriage via the support of sidepiece bearing pin pivoted ground therein, each support moves at its own guide rail, and is provided with for synchronization-moving member.Except that, described two side bracket also can (for example) firmly be connected to each other by horizontal support piece, bar or analog, so that produce the supporting structure that fixedly assembles.In this case, might only use the single driving assembly in the central part office of supporting structure, for example be the form of single linear electric motor or conventional linear actuating device.

Being used for the guide rail of supporting structure can be flatly be parallel to the sidewall of support and extends in the direction of Y reference axis.In this case, when for example activating synchronously the drive unit of linear electric motor, supporting structure carries out in a horizontal plane translation and moves.Yet in suitable variant, guide rail is placed in the support in acutangulate inclination mode,, is elevated to the back from the front that is.Therefore, when carriage and tool stand moved, supporting structure also automatically together promoted with carriage and tool stand, this means to reach the position of tool stand to be changed to more quickly from its horizontal level the upright position-and vice versa.

In another embodiment of the present invention, carrier arrangement contains to be useful on and clamps relatively short workpiece or lathe chisel or milling machine spindle but not the holder of rotatable or irrotational work stage.Therefore, might carry out vertically and horizontally rotate and milling machine operation.The holding unit (for example) that is mounted to carriage can be so-called chuck, and the instrument axostylus axostyle of (for example) turning tool is sandwiched in the described chuck.In such cases, machining cell (that is, the milling head of lathe) is used for the short workpiece of fixing, and the workpiece of described weak point is carried out rotating operation.

Description of drawings

Can by referring to graphic from hereinafter other advantage of the present invention and details being understood in the description of embodiment, graphicly be:

Figure 1A, Figure 1B show the perspective illustration of the lathe of the embodiment that is included in horizontal level (A) and the support according to the present invention device in upright position (B);

Fig. 2 A, Fig. 2 B are illustrated in horizontal level (A) and the perspective illustration according to the carrier arrangement of the present invention of Fig. 1 in upright position (B),

Fig. 3 shows the decomposition explanation according to the carrier arrangement of the present invention of Fig. 1,

Fig. 4 schematically is illustrated in the principle of work and power according to the embodiment of Fig. 1 of support according to the present invention device in some stages,

Fig. 5 shows the lathe according to Fig. 1 of another embodiment that comprises the support according to the present invention device,

Fig. 6 schematically is illustrated in the principle of work and power according to the embodiment of Fig. 5 in some stages,

Fig. 7 shows another embodiment of the support according to the present invention device that comprises respectively main shaft holder and chuck.

The specific embodiment

The milling machine of perspective explanation is the support 1 of carrying out and contain high degree of rigidity with the derrick tower tectonic type among Fig. 1, and support 1 is formed by two sidewalls 2,3, front side front section 4 and upper cover plate 5 parallel to each other.On two sidewalls 2,3 end face, come mounting guide rail 6,7 with orientation parallel to each other, at described guide rail 6,7 guiding horizontal supports 8 so that can be by the direction superior displacement of motor in the Y reference axis.On the vertical front side of this horizontal support 8, at a distance of vertical range two guide rails 9,10 are installed, guiding horizontal stand 11 is so that can be at the direction superior displacement of X coordinate in described guide rail 9,10.To be placed in linear electric motor 12 between two guide rails 9,10 as the drive unit of horizontal stand 11.On the front side of horizontal stand 11, vertical support frame 14 is installed so that can be at Z reference axis superior displacement, wherein in this case, linear electric motor is also suitably as driving assembly.These vertical support frame 14 carrying machining cells 15, described machining cell 15 is the form of the milling head through installing that comprises working-spindle 16.

The front section 4 of extending along two sidewalls 2,3 front side contains with machine sidewall 2,3 compares highly lower two sidewalls 20,21, and described two sidewalls 20,21 are connected to the sidewall 2,3 of support to form the on the whole structural unit of high degree of rigidity.In the gap between these two sidewalls 20,21 of front section 4, be provided with support according to the present invention device 22, will describe in detail referring to Fig. 2 and Fig. 3 hereinafter.

This carrier arrangement 22 has bridge shape carriage 25, and it is supported on pivotly via bearing arrangement in two side bracket 26,27.

Guide block

28,29 is fixed to these

supports

26,27 outer surface, described with two sidewalls 20 that are installed to front section 4,21 and the respective track 30,31 of the sidewall 2 of support 1,3 inner surface cooperate.In this way, two supports 26 of guiding, 27 in the approximate horizontal plane.In each

support

26,27, bearing 33,34 is arranged on the inner surface, and carriage 25 rotatably is supported in the described bearing.Linear

electric motor

35,36 minor components are attached to support 26,27 outer incline surface, and described minor components cooperates with the critical piece 23,24 of fixing, and described fixing critical piece 23,24 is placed on the sidewall 20,21 of front section 4 in the

inclination mode.Bearing

33,34 on two supports 26,27 inner surface bearing insert and be formed at two sidepiece bearing openings, 37,38 engagements in the carriage 25 with aiming at.Two supports 26,27 can firmly be connected to each other by horizontal support piece, bar, base plate or other suitable assembly in order to form the supporting structure of dimensionally stable.The single driving assembly (for example, linear electric motor) that use will be placed in the center is enough to make assembled supporting structure translation ground of getting well to form solid device to be shifted, and this has reduced technology and has made great efforts and cost.

As recognizing from Fig. 3, in described figure, two

other bearing openings

39,40 are arranged at the rearward end office of carriage 25, are arranged at being accommodated in the described opening towards

interior bearing insert

41,42 of

arm

43,44 lower end place of arc crank-like.The arm 43 of these two crank-like, 44 upper terminal carrying other towards outer parts of

bearings

45,46, described parts of

bearings

45,46 cooperates with the sidewall 2 that is arranged in support 1,3 corresponding bearing insert 47,48.Replace the

arm

43,44 of two illustrated crank-like, might only use a hinge support, it is arranged between the lateral stiffening bar of the rear portion of carriage and support.

According to Fig. 1 in the embodiment of Fig. 6, carriage 25 forms the support member of workpiece turntables 50, workpiece turntable 50 has be used to the work stage 51 of the rotary driving of clamping workpiece and advantageously can be the direct electric drive motor in inside of torque motor.This CD-ROM drive motor and corresponding guiding and Lock Part are installed in the annular solid 52 of work stage in usual mode respectively and are contained in the corresponding dimple 53 of carriage 25.

With hereinafter referring to Fig. 1 and Fig. 2 and especially describe the principle of work and power and operator scheme according to above-described embodiment of the carrier arrangement in the lathe of Fig. 1 referring to Fig. 4.

If the horizontal level that work stage 51 will be showed from Figure 1A and Fig. 2 A moves to respectively in the upright position according to Figure 1B and Fig. 2 B, activate so two

linear motors

35,36, it synchronously moves to respectively rear positions according to Figure 1B and Fig. 2 B with two supports 26,27 from the forward position of showing respectively among Figure 1A and Fig. 2 A.Owing to two supports 26,27 are connected to carriage 25 in hinged way via bearing 33 and 34, therefore carriage 25 is also together mobile with two

supports

26,27, owing to two supports 26, the 27th, via its

guide block

28,29 and be guided in side rail 30,31, the rotation of these bearings is offset in same level.Since carriage 25 via the arm 43 of two crank-like, 44 and sports coupling to two sidewalls 2,3 of support 1, therefore the displacement movement of carriage 25 in the district of two fore bearings causes carriage 25 to be located in the mode that tilts gradually, and the arm 43 of two crank-like, 44 pivots in two distolateral support member at the same time.Continue to carry out this process, until reach the terminal position of wanting of work stage 51, be preferably it according to the upright position of Figure 1B and Fig. 2 B.

In Fig. 4 D, schematically show the principle of work and power of support according to the present invention device at Fig. 4 A.Indicate the assembly that has identical function with particular according to the lathe of Fig. 1 and Fig. 2 with same reference numbers.

The mode of operation of Fig. 4 A display carrier device, wherein carriage 25 and workpiece level are aimed at, as also illustrated in Figure 1A and Fig. 2 A.By activating linear electric motor 23,24; 35,36 (not being showed among Fig. 4) are displaced to the position on the guide rail 31 that is installed on the body of showing among Fig. 4 B in order to fix with support 27.Owing to hinge joint is rotatably supported in the mode on the rigid bearing of its free terminal in the sidewall 2 of body to the arm 43 of the rear end part of carriage 25 via bearing, so these two sidepiece arms 43, the 44 mobile pivoting actions of carrying out of advancing owing to advancing of support 27 fore-end mobile and therefore carriage 25.The pivoting action of the mobile combination arm 43 of advancing of carriage 25 causes carriage 25 to be in obliquity and therefore also causes the work stage 51 of installing above it also to be in obliquity.Minute other displacement and the mobile value of advancing of support 27 are only depended in the angle of inclination of carriage 25, so that can select any at random angle of inclination between " tipping position " that carriage 25 shows in according to the horizontal level of Fig. 4 A and Fig. 4 D.Might by fixing (not shown) with carriage 25 and/or bracket locked in want centre position.Carriage 25 and work stage 51 arrive the upright position of showing among Fig. 4 C owing to linear electric motor to the continuing less displacement of support 27, if and on rail 31 this of support 27 moves horizontally continuation, it arrives " tipping " position of showing among Fig. 4 D so, can be by processing particular cavity and indenture with simple machining tool in workpiece in described position.Basically, from two supports through assembling to form common platform structure and only to use the variant of a linear actuating device to produce identical function course.

About technological concept and its structure, the lathe of showing among Fig. 5 and Fig. 6 is corresponding to the milling machine according to Fig. 1.Therefore, indicate same components with same reference numbers, and herein will again do not describe according to the milling machine of Fig. 5, Fig. 6 in order to avoid repetition.Corresponding condition is applicable to its funtion part in essence corresponding to the carrier arrangement of the assembly of showing among Fig. 3.

Be the following fact according to the essence difference between the carrier arrangement of Fig. 1 and Fig. 5: in the embodiment according to Fig. 1, guide rail 30,31 flatly extends in the direction of Y reference axis, so that two supports 26,27 are mobile in a horizontal plane.Contrast with it, in the embodiment according to Fig. 5, Fig. 6, two guide rails 57,58 extend to rear top in the bottom with for example 10 ° to 45 ° acute angle of inclination in the past, such as among Fig. 5 A, Fig. 5 B displaying.Two guide rails 57,58 are installed to two the sidepiece pedestals 55,56 adjacent with the sidewall of support.On each guide rail 57,58, movable supporting frame 59,60 or the sidepiece part of supporting structure, wherein can be with the linear electric motor in as in the embodiment according to Fig. 1 or driving assembly (for example, pressure fluid cylinder, ball screw drive unit or analog) that also can other is suitable as the carriage drive device.According to the formation of the carriage 25 of the holder device of Fig. 5 A, Fig. 5 B and rotation or turning of work piece platform 51 with support described formation and support corresponding to the embodiment that shows among Fig. 1-3.In two embodiment, carriage 25 and work stage 51 can be pivoted to continuously from the horizontal level according to Figure 1A and Fig. 5 A the upright position according to Figure 1B and Fig. 5 B, that is, only respectively by two supports 26,27 and 59,60 in horizontal plane (Figure 1A, Figure 1B) or the movement of advancing of the translation in clinoplain (Fig. 5 A, Fig. 5 B).

Fig. 6 A schematically shows four-stage according to the operator scheme of the embodiment of Fig. 5-for example to Fig. 6 D, corresponding to Fig. 4 A to Fig. 4 C.In the mode of operation 6A of carrier arrangement, support 59 and bearing 33 are arranged in carriage 25 at the place, front lower ends district of guide rail 57, and work stage 51 is taked horizontal level.In mode of operation 6B, support 59,60 and the bearing 33,34 of carriage 25 move on to guide rail 57,58 approximate center on, and carriage 25 and work stage 51 are in the obliquity into about 40 ° inclination angle.In mode of operation 6C, bearing 33,34 and support 59,60 move on to guide rail 57,58 rear upper end areas on, carriage 25 and therefore also have work stage 51 to take also to be illustrated in upright position among Fig. 5 B whereby.When support 59,60 has been moved further when a small amount of, carriage 25 and work stage 51 arrive the tipping position of showing among Fig. 6 D, and (for example) can make indenture in workpiece in described position.

In the above-mentioned carrier arrangement that passes through referring to Fig. 5 and Fig. 6 description, the result is increase and the support-moving of execution on the oriented device of coupling/beginning angle.Therefore, reach the linear path of the shortening of moving for the pivot of realizing carriage 25 and work stage 51, this means that the chip of machine produces increase.In addition, can reach the moving process of substantial linear and the pact of work stage-10 ° to the range of pivot of+120 ° increase.

Compare with known embodiment, the carrier arrangement of above-detailed provides many advantages.For instance, the linearity of work stage and mobile overlapping causing the good especially use of machine space and the only a few limitations of the working space in the upright position of work stage of pivot.In addition, reach high accuracy by the heat effect length of the weak point between measuring system and instrument or the Workpiece carrier.Because the weight of individual devices only has less impact to the machine geometry, therefore might reach owing to relatively less moving mass high geometric accuracy and high dynamically.Hold symmetrically the high overall stiffness that carrier arrangement allows to realize the support according to the present invention device having on altogether four isolated pivotal engagement points of short lever arm.On the one hand via swivel bearing with the special sports coupling of bridge shape carriage to can be linear, level or the linear support that moves in the inclination mode and on the other hand via the arm of crank-like with the special sports coupling of bridge shape carriage to fixing mechanical wall so that might by measure advancing of support move realize work stage in addition as the alignment angle born without any problem.In addition, be used for realizing that (for example) is an advantage by relatively simple integration of the different technologies system of the rotation function of the turning of work piece platform of torque motor or rotary main shaft driving.Geometry that can be by selecting suitably coupling unit (for example, rotatably be supported on length and the shape of the arm of two ends, and the position of pivotal engagement point and distance) optimize the restriction of working space when treatment tool on rotation or Workpiece carrier.

Workpiece or tool carrier and box-like carriage 25 are suspended on respectively and cause little bending and torsion and therefore even also cause high rigidity under high dynamic load in the district of four " intersecting points ".Because it is lightweight that carriage and its associated component can be designed to, therefore cause the moving mass of less and therefore cause high dynamically.Hinged arm might use the pallet changer of Direct Disposal supporting plate, because can be settled respectively and the rear end of hinge joint at carriage.

The turntable of showing among replacement Fig. 1 and Fig. 2 also might use the special tool(s) main shaft in the support according to the present invention device, for example rotary main shaft, or the clamping device that is used for rotation processing as showing among (for example) Fig. 7.

The carrier arrangement of showing among Fig. 7 is to a great extent corresponding to the embodiment of Fig. 2, and can be used for respectively in the one in Fig. 1 and lathe illustrated in fig. 6.In this carrier arrangement according to Fig. 7, and indicate with same reference numbers according to the identical assembly of the assembly among the embodiment of Fig. 1, Fig. 2.Replacement is according to the turntable 51 of the embodiment of Fig. 1, Fig. 2, and the carrier arrangement of showing among Fig. 7 has the fixing member 62 that is used for fixing instrument regularly or workpiece on the end face that is placed in bridge shape carriage 25.Such as in this situation displaying, fixing member 62 is formed the chuck of the cylinder body 63 that has on the end face that is supported on carriage 25, wherein three chuck jaws 64 through settling in order to be offset 120 ° angle and can be shifted diametrically.In this chuck 62, can clamp regularly workpiece (not shown).The cylinder body 63 of chuck 62 can be rotated formula and drive that the workpiece of being clamped is carried out the rotation process operation, that is, and and by being installed in the carriage 25 or the CD-ROM drive motor that is incorporated in the fixing member 62 drives with suitable method.In addition, also might with the tool holder of for example lathe chisel in chuck 62 and the workpiece of the weak point that will in the lathe according to Fig. 1 and Fig. 5 respectively, process be inserted in its milling head 15 so that can carry out the rotation process operation to this workpiece.

The possibility that can process larger workpiece on less lathe is practical especially advantage, and this can mean the cost of investment of reduction and short part manufacturing time.Herein, owing to little moving mass, coupled motions allow very high motion dynamic.In the carrier arrangement of developing according to the present invention, the platform structure that can omit same type is the pivot driver device of needed brute force up to now.

Claims

1. lathe that has for the carrier arrangement of workpiece and instrument, it comprises

Carriage, it can and be contained on the support that is guided in support around the first axle pivot,

Be used for the carrier of workpiece or instrument, it is arranged on the described carriage, and

Drive unit, it is used for the displacement of described support on the second axis,

Described lathe is characterised in that

Described carriage on being supported on two supports also via the arm hinge joint of the crank-like sidewall to described support, so that be arranged in Linear-moving that described carrier on the described carriage can be by described support and be pivoted in the various operating positions owing to the sidewall that described movement of bracket is coupled to described support.

2. lathe according to claim 1,

It is characterized in that

The mode in two supports is supported via two sidepiece swivel bearings with its fore-end to form the described carriage of pivot bridge.

3. lathe according to claim 2,

It is characterized in that

Described two supports firmly are connected to each other via horizontal support piece, and form the part of the supporting structure of dimensionally stable.

4. the described lathe of arbitrary claim in 3 according to claim 1,

It is characterized in that

The free terminal of the arm of described crank-like is supported in the swivel bearing in the described sidewall of described support.

5. lathe according to claim 4,

It is characterized in that

The arm of described crank-like has curved shape, and has towards interior bearing insert with in its another end in an one end and to have towards outer bearing insert.

6. lathe according to claim 4,

It is characterized in that

The arm of described crank-like in described carriage bearing and the described sidepiece swivel bearing of described carriage in described support at a distance of preset distance.

7. lathe according to claim 6,

It is characterized in that

Described bearing and described carriage the described swivel bearing on described support of the arm of described crank-like in described carriage is arranged in common plane.

8. the described lathe of arbitrary claim in 3 according to claim 1,

It is characterized in that

Described carriage via single hinged pillar in hinged way sports coupling to the sidewall of described support (1).

9. the described lathe of arbitrary claim in 3 according to claim 1,

It is characterized in that

Described support can be by the guide rail superior displacement of motor driving on the pedestal of the sidewall of the described sidewall that is installed to described support and seat front section.

10. lathe according to claim 9,

It is characterized in that

Described guide rail extends in the direction of the second axis in a horizontal plane.

11. lathe according to claim 9,

It is characterized in that

Described guide rail extends in certain mode in order to arrive rear top with acute angle the past bottom angled.

12. the described lathe of arbitrary claim in 3 according to claim 1,

It is characterized in that

The fixing member is arranged at the rotation that is used for workpiece on the described carriage.

13. lathe according to claim 12,

It is characterized in that

Described fixing member is that the mode with the chuck of rotary driving forms, and workpiece or instrument can clip in the described chuck.

14. the described lathe of arbitrary claim in 3 according to claim 1,

It is characterized in that

At least one linear electric motor is set as the described linearly moving driving assembly that is used for described support.

15. lathe according to claim 14,

It is characterized in that

Two synchronous linear electric motor with identical angle of inclination relatively tiltably-mounted on the bevelled pedestal on the inner surface of the described sidewall of described support.